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Synthesis, characterization, and photophysical properties of a thiophene-functionalized bis(pyrazolyl) pyridine (BPP)

Lauren A Lytwak1, Julie M Stanley, Michelle L Mejía

  • 1Department of Chemistry & Biochemistry and Center for Electrochemistry, The University of Texas at Austin, 1 University Station, A5300, Austin, TX 78712-0165, USA.

Dalton Transactions (Cambridge, England : 2003)
|July 24, 2010
PubMed

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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
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